JP2014038789A - Led illumination system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED illumination system which can change a color temperature depending on user's preference with a simple operation.SOLUTION: An LED illumination system comprises: a lighting fixture L1 with two types or more LEDs of different color temperatures serving as light sources mounted thereon; switch means (constant current switching parts 15, 16) for switching light emission of the LEDs of different color temperatures configuring the light sources, for each type of the color temperatures; control means (a control unit 12) for performing a switch control; a pull-less switch 30 for giving a control instruction; determination means (a microcomputer M) for determining whether there is a control instruction; and storage means for storing information on the color temperature. The control means performs the switch control by the switch means in accordance with a control instruction when the determination means determines that there was a next control instruction by the pull-less switch, and performs the switch control by the switch means on the basis of the information on the color temperature stored in the storage means when the determination means determines that there was no next control instruction by the pull-less switch.

Description

  The present invention relates to an LED lighting system.

  Illumination devices and illumination systems that use LEDs as light sources instead of light sources such as incandescent bulbs and fluorescent lamps are becoming widespread as illumination devices used for indoor lighting in homes and offices.

  That is, with the increase in brightness of LEDs, the demand for lighting devices and the like that take advantage of characteristics such as small size, low power consumption, and long life is rapidly expanding.

  Various techniques relating to such an illumination device using LEDs have been proposed (see, for example, Patent Document 1).

JP 2011-134684 A

  By the way, an illumination system using LEDs may be configured as a downlight that is embedded in a ceiling, for example.

  Such a downlight may want to change the color temperature depending on conditions such as the indoor environment and time zone. Specifically, for example, it may be desired to change the color temperature to a daylight color having a color temperature of about 6500K or a daylight white having a color temperature of about 5000K during a daytime period, and to a light bulb color having a color temperature of about 2900K in a nighttime period.

  Lamps used for downlights have been developed in the form of light bulbs that have two or more types of LEDs with different color temperatures as light sources. However, as described above, the color temperature can be changed with a simple operation. There is no LED lighting system yet.

  The objective of this invention is providing the LED lighting system which can change color temperature by simple operation.

  According to one aspect of the present invention for achieving the above object, a lamp having two or more kinds of LEDs having different color temperatures as a light source, and light emission of the LEDs having different color temperatures constituting the light source in the lamp. Switching means for switching the color temperature for each type of color temperature, control means for performing switching control of the switching means, and a pull for giving a control instruction to the control means based on on / off switching of the power supply for the lamp A determination switch that determines whether or not there is a control instruction by the pullless switch; and a storage unit that stores information on the color temperature based on the control instruction by the pullless switch. When it is determined by the means that the next control instruction by the pullless switch has been given, the switching means is controlled according to the control instruction, Provided is an LED illumination system that performs switching control of the switching means based on information on the color temperature stored in the storage means when it is determined by the determination means that there is no next control instruction by the pullless switch. Is done.

  ADVANTAGE OF THE INVENTION According to this invention, the LED illumination system which can change color temperature by simple operation by operation of a pullless switch can be provided.

The block diagram which shows schematic structure of the LED illumination system which concerns on 1st Example. Schematic which shows the connection state of the downlight in the LED lighting system which concerns on 1st Example. Explanatory drawing which shows the state of the color temperature change by a pullless switch. The wave form diagram which shows the determination condition of the control instruction by a pullless switch. The flowchart which shows the process sequence of the color temperature memory process in the LED lighting system which concerns on 1st Example. The flowchart which shows the process sequence of the memory initialization process in the LED lighting system which concerns on 1st Example. The graph which shows the example of the light control operation | movement in the LED lighting system which concerns on 1st Example. It is a figure which shows the structural example of the downlight in the LED illumination system which concerns on 1st Example, (a) is the side view, (b) is the bottom view. The block diagram which shows schematic structure of the LED illumination system which concerns on 2nd Example.

  Next, embodiments will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

  Further, the embodiments described below exemplify apparatuses and methods for embodying the technical idea of the present invention, and the embodiments of the present invention include the material, shape, structure, The layout is not specified as follows. Various modifications can be made to the embodiment of the present invention within the scope of the claims.

[Embodiment]
(First embodiment)
With reference to FIGS. 1-8, the LED lighting system 1 which concerns on 1st Example is demonstrated.

  The LED lighting system 1 according to the first example of the present embodiment includes a lamp (for example, a downlight L1 or the like) in which two or more types of LEDs 17 and 18 having different color temperatures are mounted as light sources, and a lamp L1 or the like. Switching means (constant current switch parts 15 and 16) for switching the light emission of the LEDs 17 and 18 having different color temperatures for each color temperature, and a control means (control part 12) for performing switching control of the switching means, Based on on / off switching of the power supply (AC power supply 10) for supplying power to the lamp L1, a pullless switch 30 for giving a control instruction to the control means (control unit 12), and whether there is a control instruction by the pullless switch 30 Determination means (for example, microcomputer M) for determination, and storage means (for example, information on color temperature based on a control instruction by the pullless switch 30) Rush memory 20), the control means (control unit 12), when it is determined by the determination means that there is a control instruction by the next pullless switch 30, the switching means (constant current) Switching control of the switch sections 15 and 16) is performed, and when it is determined by the determination means that there is no next control instruction by the pullless switch 30, the switching means (based on the information on the color temperature stored in the storage means) It is configured to perform switching control of the constant current switch units 15 and 16).

  Further, when the power supply for power supply is the AC power supply 10, an AC / DC converter 11 that converts the AC power supply 10 into a DC power supply that can drive the LEDs 17 and 18 can be provided.

  In addition, the secondary battery 13 is connected to the AC / DC converter 11 and is charged. The secondary battery 13 is connected to the control means (control unit 12), and the power supply for power supply is temporarily interrupted by the pullless switch 30. If it occurs, the secondary battery 13 may supply power to the control means.

  Further, the two or more types of LEDs 17 and 18 having different color temperatures can include at least two types of LEDs, a daylight color LED, a daylight white LED, and a light bulb color LED.

  In addition, an initialization unit that initializes information about the color temperature stored in the storage unit (for example, the flash memory 20) can be provided.

  The initialization means may be constituted by a physical switch (mechanical switch) provided in the lamp L1 or the like, or the initialization by the initialization means is a predetermined value of the pullless switch 30 by the determination means. The determination may be made based on the determination result of on / off switching related to the pattern. A specific processing procedure will be described later.

  Further, the secondary battery 13 can be configured by either an electrolytic capacitor or an electric double layer capacitor.

  Here, with reference to the block diagram of FIG. 1, the structural example of the LED illumination system 1 which concerns on 1st Example is demonstrated.

  As shown in FIG. 1, the LED lighting system 1 according to the first embodiment is provided with a pullless switch 30 that gives a control instruction to the control unit 12 as a control unit in an AC power supply 10 as a power supply. The pullless switch 30 does not have to be a special switch, and a general power switch provided on a wall or the like is sufficient as shown in FIG.

  The pullless switch 30 is connected to an AC / DC converter 11 that converts the AC power supply 10 into a DC power supply that can drive the LEDs 17 and 18 via the node N1.

  As described above, the AC / DC converter 11 is connected to the secondary battery 13 formed of, for example, either an electrolytic capacitor or an electric double layer capacitor. The secondary battery 13 is connected to a microcomputer constituting the control unit 12, and when the power supply for power supply is interrupted by the pullless switch 30, the secondary battery 13 supplies power to the control unit 12.

  The control unit 12 is constituted by a microcomputer M having a built-in flash memory 20, for example. Note that the flash memory may be externally attached.

  A photocoupler 14 connected to the node N1 and monitoring the AC power supply 10 is connected to the control unit 12 via a signal line.

  The AC / DC converter 11 is connected to the 1ch constant current switch unit 15 and the 2ch constant current switch unit 16 via the node N2.

  The 1ch constant current switch unit 15 and the 2ch constant current switch unit 16 are connected to the control unit 12 via signal lines, respectively.

  In this embodiment, a daylight color LED 17 having a color temperature of about 6500K is connected to the constant current switch section 15 of 1ch, and a light bulb color LED 18 having a color temperature of about 2900K is connected to the constant current switch section 16 of 2ch. .

  Instead of the daylight color LED 17, a daylight white LED having a color temperature of about 5000K may be connected.

  Further, as shown in FIG. 2, the lamps L1 to L4 can be connected in parallel to a power supply line 100 extending from a power supply for power supply (AC power supply 10) via a pullless switch 30.

  Moreover, in a present Example, as shown in FIG.3 and FIG.8, each lamp L1-L4 is comprised as a downlight attached by being embedded in a ceiling.

(Control instruction by pullless switch)
Here, the control instruction by the pullless switch 30 will be described with reference to FIGS. 3 and 4.

  First, when the operator wants to change the color temperature in the LED lighting system 1 according to the first embodiment, the pullless switch 30 is turned on and the LEDs 17 and 18 are lit as shown in FIG. The pullless switch 30 is quickly turned off and then on.

  When it is determined by the microcomputer M as the determination means that the off-to-on operation satisfies the predetermined time condition, for example, only the bulb-colored LED 18 out of the LEDs is turned off under the control of the control unit 12. . As a result, only the daylight color LED 17 is turned on, and at least the color temperature of the downlight L1 is changed to about 6500K.

  Further, when it is desired to change the color temperature to another type, the pullless switch 30 is quickly turned off and on again as shown in FIG. When it is determined by the microcomputer M as the determination means that the off-to-on operation satisfies the predetermined time condition, for example, only the daylight color LED 17 is turned off by the control of the control unit 12. As a result, only the light bulb color LED 18 is turned on, and at least the color temperature of the downlight L1 is changed to about 2900K.

  By the way, the microcomputer M as the determination unit performs switching control of the constant current switch units 15 and 16 as the switching unit according to the interval of the instantaneous interruption of the power supply for power supply due to the turn-off operation of the pullless switch 30. Judging.

  However, since there may be a momentary interruption of the power supply for power supply that is not based on the operation of the pullless switch 30, it is necessary to determine such a spontaneous momentary interruption.

  Therefore, for example, as shown in FIG. 4, when the period from the time point t1 when the instantaneous interruption occurs is T1 = 0.2 sec or less, it is determined that the instantaneous interruption occurs, and the following T2 = 4 When the power supply for power supply (AC power supply 10) is turned on within 8 seconds, it is determined that a control instruction based on an operation of turning off the pullless switch 30 has been issued.

  Hereinafter, T2 is referred to as a “pullless operation determination period” in the present embodiment.

  Further, as shown in FIG. 4, in the period (ta to tb) in which the power supply for power supply (AC power supply 10) is instantaneously interrupted (ta to tb), for example, an electric capacitor or an electric double layer capacitor is used. Due to the discharge of the secondary battery 13, power is supplied to the control unit 12, and normal control is performed even during momentary interruption.

  Further, the secondary battery 13 is charged via the AC / DC converter 11 except for a period (ta to tb) in which an instantaneous interruption occurs.

(Color temperature memory processing)
Next, with reference to the flowchart shown in FIG. 5, the process procedure of the color temperature memory | storage process performed with the LED lighting system 1 which concerns on 1st Example is demonstrated.

  First, in step S10, a pullless operation (OFF → ON operation) of the pullless switch 30 as a wall switch is performed. In step S11, it is determined whether or not the pullless operation in step S10 is within the pullless operation determination period. If “No”, the process waits, and if “Yes”, the process proceeds to step S12.

  In step S12, the color temperature is changed assuming that there is a control instruction from the pullless switch 30. Specifically, as described above, for example, control is performed so that only the light bulb color LED 18 out of the LEDs is turned off, or only the daylight color LED 17 is turned off.

  Next, in step S <b> 13, information regarding the current color temperature is stored in the flash memory 20. Specifically, for example, a command for performing operation control such as “turn off only the bulb-colored LED 18” or “turn off only the daylight-colored LED 17” is stored as information on the current color temperature.

  In step S14, a pullless operation (OFF → ON operation) of the pullless switch 30 as the next wall switch is performed.

  In step S15, it is determined whether or not the pullless operation in step S14 is within the pullless operation determination period. If “Yes”, the process proceeds to step S12 to store information on the current color temperature in the flash memory 20. I do.

  On the other hand, if “No” is determined in step S15, the pullless operation of the pullless switch 30 is invalidated, and information on the current color temperature (for example, “turn off only the light bulb color LED 18” from the flash memory 20). Alternatively, a command for performing operation control such as “turn off only the daylight color LED 17” is read out, the color temperature is changed based on the command or the like in step S17, and the process returns to step S14.

  In this way, by storing information on the current color temperature in the flash memory 20, the state before the color temperature is changed when the lights L1 to L4 and the like are turned off for a long time and then turned on for the next time. It is possible to avoid the situation of returning to, and the convenience of the user can be improved.

(Memory initialization process)
Next, with reference to the flowchart shown in FIG. 6, the process sequence of the memory initialization process performed with the LED lighting system 1 which concerns on 1st Example is demonstrated.

  First, in step S20, a pullless operation (OFF → ON operation) of the pullless switch 30 as a wall switch is performed.

  Next, in step S21, it is determined whether or not the pullless operation in step S20 is a pullless operation under a predetermined condition. The pullless operation under the predetermined condition is not particularly limited. For example, the pullless operation of the pullless switch 30 may be performed three or more times during the pullless operation determination period.

  If the determination result in step S21 is “No”, the process proceeds to step S22, and the flash memory 20 is not initialized and the process returns to step S20.

  On the other hand, if the determination result in step S21 is “Yes”, the process proceeds to step S23, the flash memory 20 is initialized, and the process returns to step S20.

  Thereby, for example, as shown in FIG. 2, when a plurality of lamps L1 to L4 are connected in parallel to the power supply line 100, the color temperatures of the lamps L1 to L4 are different due to the pullless operation. In this case, by temporarily initializing information on the current color temperature stored in the flash memory 20, it is possible to align the color temperatures of the lamps L1 to L4.

  Instead of executing the memory initialization process as shown in FIG. 6, the flash memory 20 may be initialized by operating a physical switch (mechanical switch) provided in the lamp L1 or the like.

(Dimming operation)
Next, an example of the dimming operation in the LED lighting system 1 according to the first embodiment will be described with reference to FIG.

  In the example shown in FIG. 7, the color temperature is changed as daylight color (D color) → bulb color (L color) → daylight color (D color). In this case, t10 and t40 are periods in which instantaneous interruption is determined (for example, 0.2 sec), t20 and t50 are pullless operation determination periods (for example, 4.8 sec), and t30 and t60 are until the brightness reaches 0 to 100%. Dimming period (for example, 0.65 sec).

  Here, in the period t30, a line indicated by a broken line A indicates a case where the brightness is linearly changed from 0 to 100%. In this case, there is a problem that the brightness changes quickly and feels dazzling.

Therefore, in the example shown in FIG. 7, the brightness is gradually changed along the curve B until reaching 0 to 100%. The curve B can be, for example, a curve that satisfies the ^second derivative d ² y / dt ² ≧ 0.

  As a result, the brightness can be changed more slowly than when the brightness is changed linearly, and the glare felt by the user can be reduced even when the color temperature of the lamp L1 or the like is changed. it can.

(Configuration example of downlight)
Next, with reference to FIG. 8, the structural example of the downlight in the LED lighting system which concerns on 1st Example is demonstrated.

  FIG. 8A is a side view of the downlight, and FIG. 8B is a bottom view thereof.

  As shown in FIG. 8A, the lamp L1 and the like constituting the downlight are mainly composed of a socket part 300 and a leaf spring 301 extending to the left and right below the socket part 300.

  Further, as shown in FIG. 8B, an LED bulb 302 is disposed on the socket portion 300 from the bottom surface side.

  The LED type light bulb 302 is not particularly limited. For example, a plurality of daylight color LEDs 17 having a color temperature of about 6500K and a plurality of light bulb color LEDs 18 having a color temperature of about 2900K are provided in a predetermined arrangement.

  Instead of the daylight color LED 17, an LED type light bulb 302 provided with a daylight white LED having a color temperature of about 5000K may be used.

  And the lamp L1 etc. which comprise the downlight of such a structure are inserted in the hole for the downlight installation formed in the ceiling of the room in the state which folded the leaf | plate spring 301, and with the urging | biasing force of the leaf | plate spring 301, Fixed.

(Second embodiment)
With reference to FIG. 9, the LED illumination system 1a which concerns on 2nd Example is demonstrated.

  In addition, about the structure similar to the LED lighting system 1 which concerns on 1st Example, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  The difference between the LED lighting system 1a according to the second embodiment and the LED lighting system 1 according to the first embodiment is that the determination means (for example, the microcomputer M) determines whether or not there is a control instruction by the pullless switch 30. The first switch SW1 to be validated or invalidated and the second switch SW2 to designate information relating to the color temperature at the first lighting are provided.

  Specifically, as illustrated in FIG. 9, a first switch SW <b> 1 and a second switch SW <b> 2 configured by a slide switch, a dip switch, and the like are provided in the control unit 12.

  For example, the first switch SW1 is turned on when validating the determination of the presence / absence of a control instruction by the pullless switch 30, and the first switch SW1 is turned off when desiring to invalidate.

  Thereby, according to the request | requirement of the user etc. of the LED lighting system 1a which concerns on 2nd Example, the enable / disable of a pullless function can be switched and the convenience is improved.

  In addition, when designating information about the color temperature at the time of the first lighting, the second switch SW2 is set at a predetermined position.

  Thereby, when the user of the LED lighting system 1a according to the second embodiment designates the color temperature at the time of the first lighting, the user can flexibly cope with it, and the convenience is improved.

[Other embodiments]
As described above, the embodiments have been described. However, it should be understood that the descriptions and drawings constituting a part of this disclosure are illustrative and do not limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  The LED lighting system of the present invention can be applied to indoor lighting of a house or office.

DESCRIPTION OF SYMBOLS 1, 1a ... LED lighting system 10 ... AC power supply 11 ... Converter 12 ... Control part 13 ... Secondary battery 14 ... Photocoupler 15, 16 ... Constant current conversion switch part 17, 18 ... LED
DESCRIPTION OF SYMBOLS 20 ... Flash memory 30 ... Pullless switch 100 ... Power supply line 300 ... Socket part 301 ... Leaf spring 302 ... LED type light bulb L1-L4 ... Lamp (downlight)
M ... Microcomputer N1, N2 ... Node

Claims (12)

A lamp equipped with two or more kinds of LEDs having different color temperatures as a light source;
In the lamp, switching means for switching the light emission of the LEDs having different color temperatures constituting the light source for each type of color temperature;
Control means for performing switching control of the switching means;
A pullless switch for giving a control instruction to the control means based on on / off switching of a power supply for power supply to the lamp;
Determining means for determining the presence or absence of a control instruction by the pullless switch;
Storage means for storing information relating to the color temperature based on a control instruction by the pullless switch, and the control means when the determination means determines that there is a next control instruction by the pullless switch. Performs the switching control of the switching means according to the control instruction, and when the determination means determines that there is no next control instruction by the pullless switch, the information on the color temperature stored in the storage means The LED lighting system is characterized in that switching control of the switching means is performed based on the above.   The LED lighting system according to claim 1, further comprising an AC / DC converter that converts the AC power into a DC power that can drive the LED when the power supply is an AC power. A secondary battery connected to the AC / DC converter and charged;
The secondary battery is connected to the control means, and is configured to supply power to the control means by the secondary battery when an instantaneous interruption of the power supply by the pullless switch occurs. The LED illumination system according to claim 2.   4. The LED according to claim 1, wherein the two or more kinds of LEDs having different color temperatures include at least two kinds of a daylight color LED, a daylight white LED, and a light bulb color LED. 5. Lighting system.   The LED illumination system according to claim 1, further comprising an initialization unit that initializes information on the color temperature stored in the storage unit.   The LED lighting system according to claim 5, wherein the initialization unit includes a physical switch provided in the lamp.   6. The LED illumination system according to claim 5, wherein the initialization by the initialization unit is performed based on a determination result of on / off switching according to a predetermined pattern of the pullless switch by the determination unit.   The LED lighting system according to any one of claims 1 to 7, further comprising a first switch that enables or disables the determination of the presence or absence of a control instruction by the pullless switch by the determination unit. A second switch for designating information on the color temperature at the first lighting;
The said control means performs switching control of the said switching means based on the information regarding the said color temperature designated with the said 2nd switch at the time of first time lighting. The LED lighting system described.   The LED lighting system according to any one of claims 3 to 9, wherein the secondary battery is configured by either an electrolytic capacitor or an electric double layer capacitor.   11. The LED according to claim 1, wherein a plurality of the lamps are connected in parallel to a power line extending from the power supply for power supply via the pullless switch. Lighting system.   The LED lighting system according to any one of claims 1 to 11, wherein the lamp is configured as a downlight that is embedded and attached to a ceiling.

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